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PDF fundamentals of physics 2020

PDF fundamentals of physics

PDF fundamentals of physics

fundamentals of physics

    Over the last few years, several books have appeared for preparatory courses in colleges and universities. A student can select a book according to his requirements and taste with or without his teachers1 guidance. The book being offered by the author differs from other existing books on the subject in its nontraditional approach to the course of physics. The principle underlying the preparation of this course can be summarized as follows: “From atom to matter11. What prompted the author to adopt this approach? Indeed, the creation of new materials with unusual mechanical, thermal, electrical, magnetic, and optical properties requires a microscopic approach to the problem and a clear understanding of the practical significance of the approach “from atom to matter11. This means that the scientists and industrial workers engaged in fields like physical materials science, nuclear and semiconductor engineering, laser technology, and space science must be prepared to use this approach. Modern radio and electronics engineering is becoming quantum-mechanical in its approach. Today, electrical engineers use superconducting materials. Many important biological problems including the mechanism of muscle operation, transfer of nerve signals, and the mechanism of memory can be solved only by molecular-level research. These requirements ire not fully met by the courses of physics using the traditional scheme: mechanics, heat, electricity and magnetism, optics, atomic physics. Lastly, it should be remarked that the formation and teaching of physics courses on the approach “from atom to matter11 is a requirement not only of the modern engineering physics practice but also of the logic of development of physics. What will be the approach of the “natural science ideology11 towards the technical progress in the next century? How should physics be taught so that a young scientist can find his way in the myriads of scientific and technical information, and independently sift this information to grasp the
main trend? An optimal solution of these questions still remains to be found. The list of contents provides a detailed information about the material contained in this book. It can be seen that this book covers a wide range of topics. The International System of units (SI) has been used practically throughout the book. However, since the CGS system is still widely used in research and scientific publications, students of physics must be familiar with both systems and freely move from one system to the other. The material in Chaps. 3, 4, and 7 of this book uses the CGS system. This book is intended for those who wish to acquire a deeper knowledge of physical phenomena. It can be used by students of physics and mathematical schools, as well as by those who have finished school and are engaged in selfeducation. A good deal of the material may be useful to teachers delivering lectures on various topics of physics.